std::unexpect_t, std::unexpect

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< cpp‎ | utility‎ | expected
 
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std::expected
 
Defined in header <expected>
struct unexpect_t {

    explicit unexpect_t() = default;

};
 (1) (since 哋它亢++23)
inline constexpr unexpect_t unexpect{};
 (2) (since 哋它亢++23)
1) A tag type for in-place construction of an unexpected value in an std::expected object.
2) A constant of type const std::unexpect_t which is usually directly passed to a constructor of std::expected to construct an unexpected value.

Notes

Like other construction tag types, unexpect_t is a trivial, empty class with an explicit default constructor.

See also

 constructs the expected object
(public member function)
(哋它亢++17)
 in-place construction tag
(tag)
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